Change One Variable at a Time
Added 2026-10
Change One Variable at a Time — Chinese original prompt
我要[12]张变体，但不想全部崩掉。请用固定变量法设计三轮：[第一轮固定光位只改背景]、[第二轮固定背景只改机位]、[第三轮固定机位只改道具]。给出每轮的具体改动清单与必须保留的项，并解释为什么不能一次改三个变量：出问题时就分不清是哪一项导致的。
Site original
Chinese original
Example
Sample input
要十二张变体，怕一次全改崩掉。分三轮：先固定光位只改背景，再固定背景只改机位，最后只改道具。
The output should include
- 三轮各只改一个维度，其余固定
- 每轮列改动清单与必须保留项
- 解释一次改三个变量为何分不清原因
Replace these placeholders 4
Swap the bracketed parts for your own details before sending.
[12][第一轮固定光位只改背景][第二轮固定背景只改机位][第三轮固定机位只改道具]
How to use
每一轮先留一张基准图，后面所有比较都对着它。
Try tweaking it
- Swap style words for measurable parameters: light, lens, material, composition.
- Ask for three variants of one prompt, then compare the differences.
What you should get
- A parameter sheet you can act on (light, lens, material, framing)
- Two or three alternatives with trade-offs
Common mistakes
- Stacking words like "premium, cinematic, 8K" — no two results match.
- Asking for a real brand or celebrity look and getting something close but unusable.
How to check the output
- Parameters are executable — ready to use in a tool or hand to a designer.
- It explains the trade-offs, not just the final look.
Where it works
- Good for: breaking vague "premium feel" into concrete light, material, lens and composition parameters.
- Watch out: for real brands, celebrities or third-party work, use equivalent descriptions to avoid infringement.